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We briefly review our work about the polarized foreground contamination ofthe Cosmic Microwave Background maps. We start by summarizing the mainproperties of the polarized cosmological signal, resulting in "electric" (E)and "magnetic" (B) components of the polarization tensor field on the sky. Thenwe describe our present understanding of sub-degree anisotropies from Galacticsynchrotron and from extra-Galactic point sources. We discuss theircontamination of the cosmological E and B modes.Comment: six pages including 2 figures, to appear in S. Cecchini et al.,  Astrophysical Polarized Backgrounds, AIP Conf. Proceeding

Polarized foregrounds power spectra vs CMB